The Quantum-Mechanical Probability Cloud for the Electron in the Hydrogen

question 39

Multiple Choice

The quantum-mechanical probability cloud for the electron in the hydrogen atom has an average radius

• A) that agrees with the orbital radius of Bohr.
• B) quite different from the radius predicted by Bohr.

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Definitions:

Homo Sapiens

The species to which all modern human beings belong and the only extant member of the genus Homo.

Shorter Body Form

A physical adaptation where the body shape is more compact, often as an evolutionary response to environmental factors.

Rounder Skull

A description of a cranium shape that is more globular or spherical, often assessed in studies of human evolution and variation.

Placental Mammal

Mammal in which maternal and embryonic bloodstreams exchange materials by means of a placenta.